Amsonia hubrichtii is a beautiful species with showy blue flowers and attractive, needle-like foliage that offers incredible foliage texture and bright gold fall colour.

Amsonia hubrichtii 'Butterscotch' is a blue star with powder-blue flowers and willow-like foliage with bright gold fall colour.

Amsonia 'Starstruck' displays star-like periwinkle blue flowers above silver veined foliage on dramatic near-black stems.

Amsonia 'Storm Cloud' displays star-like periwinkle blue flowers above silver veined foliage on dramatic near-black stems.

Two tones of dark and light blue make the flowers of Amsonia 'Blue Ice' the best in the genus.

Amsonia 'String Theory' is a hybrid blue star displaying star-like baby blue flowers above dark green threadleaf foliage.

Asclepias curassavica is a milkweed with blooms in scarlet red and orange.

Asclepias curassavica 'Monarch's Banquet' is a tender variegated milkweed with nectar-rich blooms in bright orange-reds all summer long.

Asclepias curassavica 'Monarch's Promise' is a variegated milkweed with blooms in scarlet red and orange all summer and fall.

Asclepias fascicularis is a monarch butterfly host with intricate pale pink and white flowers.

Asclepias viridis is the green milkweed with large clusters of green petals and purple throats.

Ceropegia woodii 'Silver Glory' is an extra silver version of string-of-hearts.

Ceropegia woodii 'Variegata', the variegated string of hearts or VSOH, is a rare houseplant with bluish variegated hearts flushed with pink.

Cynanchum atratum has small, dark purple flowers that look like starfish held in clusters at the leaf axils.

Gomphocarpus physocarpus (previously Asclepias) is a cool milkweed relative known as balloon plant or hairy balls!

Huernia zebrina or lifesaver plant produces plastic-like, star-shaped, red and yellow petals with a deep red, lifesaver-like ring.

Nerium 'Dwarf Pink Ice' is a dwarf oleander with clusters of tropical-looking, baby pink, tubular and whorled flowers in summer.

Plumeria 'Angelica' offers fragrant pink flowers with a hint of coral peach at the centres.

Plumeria 'Cancun Dreams' offers fragrant flowers that emerge dark pink and age through pink to white with orange centres.

Plumeria 'Celadine' offers fragrant flowers with yellow petals with thin white edges.

Plumeria 'Lavender Splash' has fragrant lavender pink flowers with lighter centres and a central yellow glow.

Plumeria 'Lollipop' has fragrant pink, yellow and white flowers.